Carbureter.



B. DRYSDALE.

UARBUBETER.

APPLICATION FILED FEB.6, 1912.

1 ,088,974. Patented Mar. 3, 1914.

WITNESS1E65 Q d INVENTQR 8 9 BY J 7 5 gQ/(WW Z3 7 ATTORNEY Mums Pmns m um: wlsnmmnu a c more STARS PATENT FFIQ.

BRUCE DRYSDALE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH T0 JAMES W. MASON, ONE-FOURTH TO JOHN W. HULTON, AND ONE-FOURTH TO WALKER HULTON,. ALL OF PHILADELPHIA, PENNSYLVANIA.

CARBURETER.

0 all w/zom it may concern:

Be it known that I, BRUonDnrsoALn, a subject of the King of Great Britain, residing in the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Carbureters, of which the following is a full and correct description.

My invention relates to carbureters,'and it has for one of its objects to provide an improvement in the means of throttling the air passage through a carburetor so as to regulate and control the flow of the mixture of inflammable material, such as gasolene, and air into the explosion chamber of a gas engine.

My invention has other objects and advantages which will be referred to and described in detail hereinafter or which will be apparent from the detailed description of my invention in connection with the drawings to which reference will be madein order that the same may be more read- 11y comprehended and understood.

In the said drawings, I show one form of a convenient embodiment of my invention, but it' will be understood that changes and modifications in the details of construction maybe made within the scope of the claims,

without departing therefrom.

In the draw1ngs:F1gure 1 is a top plan view of a carbureter embodying my invention; Figf2 is aside elevation of the upper 'end portion thereof, looking toward the left .1

in Fig. 1; Fig. 3 is a longitudinal section taken on the line 3-3 of Fig. 1; Fig. 4 is an enlarged sectional view of a portion of my carbureter, illustrating details of construction; and Fig. 5 is a transverse sec.- tional view on the line 55' of Fig. 3.

Referring to the drawings, it will be observed that the carbureter is provided with a casing consisting of the members 1 and 2 which are detachably connected together,

having screw-threaded connection with each other a't'3, as indicated in Figs. and et of. the drawings.

The numeral 5 designates an air inlet port and the numeral 6 designates an outletport through which the mixture of air and-1nflammable material, such as gasolene, passes from the carbureter to the explosion chamber of an engine (not shown).

Specification ofLetters Patent.

' Application filed February 6, 1912.

Patented Mar. 3, 1914.

'erial No. 675,742.

The gasolene enters the carburetor through a supply p1pe 7, which is shown in F g. 3 of the drawings. The pipe 7 communicates the section 2 of the carburetor. The lower end portion of the section 2 ls redueed 1n diameter, as shown at 10, and the ichambe'r stitutes a receptacle into which the inflammable material enters from the pipe 7. The, port 8 is adapted to be opened and closed by means of a valve 15 which is controlled by a float 16 located in the chamber 11. The float is connected to thevalve stem 17, which extends upwardly throughav hollow stem or shaft 20 extended upwardly from the member 12 through and concentrically of a flanged opening21'in the upper end of the member or section 1' of the casing.

the chaa'nber 11 is controlled by the position of the float 16 ont-he stem 17. The position of the float upon the said stem-may be varied by screwing the saidstem in or out of the member 22, polygonal in-cross' section, and which is connected, integrally or otherwise, with the valve 15. To facilitate the screwing of the stem 17 into .or out of the member 22. Ilhave provided a polygonal shaped collar 23 at the upper end of the port 8, correspondingto the shape in cross-section of the member 22.so-that when the latter is moved down into the said collar the stem 17 maybe turned in either direction, the member22-being held stationary by the said collar. "It is obviousthat by-screwing themember 17 'into or out of the member 22, the distance between the float 16 and the valve 15 is varied, and that as a resultthe height of the inflammable material in the chamber 11 may be varied Itwill be understood, however, that the height-of the liquid in the chamber is .constant for each adjustment of the float 16.

The reduced lower end 0 of the member or section 2 is internally screw-threaded, as shown in Figs. R and 4, which screw-threads are engaged l1 external-screw-threads upon the lower circular cndof the member 12. Upon the exteriorsurface-of the lower screw-threaded end ofthemember 12, Ihave provided, atintervals, grooves 25, which ponwith. the port 8, formed inthe bottom 9 of 11 formed by means of thesaid reduced end portion and the dome-shaped part 12, con-- The height of the inflammable material in a stitute passage-n-ays from which the gasolene or other inflammable material passes from the chamber 11.

designates opposing shoulders, one of which is formed upon the upper inner edge of the reduced end portion 10, and the other one of which is formed around the lower end portion of the member 12 at the upper end of the screw-threaded portion thereof already referred to. By screwing the part 12 up or down, the space between the said opposing shoulders is increased or diminished, so that the passage of the gasolene from the chamber-'11 between the shoulders is effected in the form of a thin film which spreads outward over the annular fiat horizontal portion 28 of the section 2 of the casing. 4 As a means for adjusting; the member 2, I secure to the upper end of the hollow stem an arm harfing an arcuate-shaped slot- 3.1 therein which is in engagement with a post 32 supported upon a bracket 33 secured above the projecting flange-like member 21 upon the member 1 of the casing. By turning the arm 30 about its pivot, the hollow stem 20 also turned and thereby causes movement of the member 12 in one direction or the other with relation to the upper edge of the reduced portion 10. The arm 30 is secured in adjusted position by the wing nut 34:- v

The inlet port 5 extends through the upper member 1 of the casing and communicates directly with the interior of an inner member l0 which is provided with a screwthrcaded neck 11 which has screw-threaded engagement with the interior of the flangelike projection 21 upon the section 1 of the casing. The member 10 isrofa shape and contour corresponding to that of the memher 1 of the casing and is separated therefrom a distance sufiicient to leave a space between its exterior surface and the interior surface of the member 1.

Adjustably secured to the lower end of the part 10 is an adjustable throttling annular member 15. As a means for adjusting the member 15 with relation to the lower end of the part 40, I have provided it with projecting lugs 416 which engage curved slots at in the part 40. Any number of these lugs and slots may be employed, but I show in my construction three. For the purpose of turning the annular'member 15 with relation to the member 40 to cause its adjustment, 1 provide the revoluble hollow shaft-like member having the laterally extending arms having end portions provided with slots 52 which engage pins as at diagonallyopposite points upon the interior of the said member 45.

The hollow shaft-like member 50.. is supported within the neck 11 and its upper end projects above the upper end of the said message neck and above the upper end of the flange like part 21 and is engaged by the inner end of a lever The inner end of the said lever is held in place by a collar: or sleeve and a nut 57, the latter being secured upon external screw-threads at the upper end of the hollow shaft-like member 50. The outer end of the said lever is provided with a connection (not shown) which extends int-o operativerelation to the open ator, by means of which it may be turned about its pivot to cause the turning or rotation of the shaft 50 to cause a consequent rotation of the annular member 455 with re.- lation to the member 40. By reason of the-- connection between the annular member 15 and the part 40 heretofore described, the said member 45 is raised or lowered so that the space between its lower end and the horizontal annular fiat portion 28 of the section or member 2 is increased or diminished. The inner lower edge of the annular member 15 is extended inwardly as -shownat 6t) and is screw-threaded and has screw- 99 threaded engagement with an annularmember 61 which may be rotated independently of the annular member 5L5 by means of arms G3 which are connected, integrally or otherwise, with a hollow shaft or stem 64 located internally and concentrically of the shaft 50. The upper end of the said shaft is provided with a polygonal portion 65 by means of which it: may be turned by the employrnent of a wrench or similar device. 100

i The lower end of the arms 63 are slotted, as

indicated at 68,, to receive pins '69 secured at diagonally opposite points upon the annular screw-threaded member 61. By adjusting the annular member 61 with respect to the annular member 45, the width of the space between the lower end of the annular member 61 and the shoulder or edge 70, formed upon the outer surface of themember 12, is adjusted or varied, so as to control the annular space through which the air escapes from the space between the domelike member 12 and the interior surface of the member 40 and the annular member 45.

lVhen the gasolene or other inflammable material escapes from the channels 25, it

spreads out in a thin layer upon the horizonpart 28 of the member 2. The air escapes in a thin layer from the chamber above the dome-like member 12, between the. shoulder 20 p oosen nose of the layer or film of air which is allowed to pass into the space between the part 40 and the casing may be varied and controlled. The nearer the lower edge or end of the member 45 approaches to the horizontal annular part 28, the thinner and more film-like will be the air which passes thereunder.

The part 45 constitutes a window or shutter by means of which the passage of air and inflammable material is throttled to control the flow of the mixture of air and gasolene or other inflammable material into the explosion chamber of the engine.

To limit the downward movement of the annular menber 45 toward the horizontal part 28, I provide an adjustable stop '2']. upon the lever 55 which is adapted to engage the side of the inlet port 5. The limit of downward movement of the part lti may be varied by adjusting the said stop, which adjustment is effected by turning the said stop, which is screw-threaded, to the right or to the left. 7 i

The passage of the air and the inflamjmable substance through the carbureter is effected by the exhaustaction of the engine to which the carburetor is connected.

Having thus described my invention, I claim i- 1. In a carbureter, the combination ofmeans for distributing inflammable fluid in a thin film over a portion of the carbureter structure, the said means including an adjustable memberfor varying the thickness of said film, with means forv directing air in the form of a thin film over the said film of fluid to absorb the latter to produce an exmeans for distributing an inflammable fluid in the form of a film or thin coating over an annular surface of 'a part. of the carbureter structure, the said means including an adjustable member for varying the thickness of said film, with means for directing air in the" form of a fil'm or thin layer laterally in all directions over and in contactwith the said surface to absorb the fluid deposited thereon to produce an explosive mixture of air and inflammable fluidfor use in a. gas

engine, the said last mentioned means also including an ad ustable member for varymg the thickness of the film of air.

andfrom the surface of said annular porcasing having a reduced lower end portion,

the upper end of which portion is connected with an annular horizontal portion of said casing, a member having adjustable conneetion with the said reduced portion of the casing and forming therewith a combustible fluid receiving chamber, and the said chamber being provided with channels for supplying the said fiuid in the form of a thin film to the said annular horizontal portion, and means for causing a thin annular film of air to flow over and in contact with the said horizontalportion to absorb the said fluid to produce an explosive gas for use in a gas engine.

5. In a carbureter, the combination of a member of the structure having an annular combustible fluid receiving surface and means for supplying oil to such surface with an air throttling device having an annularsurface situated in opposition to said combustible fluid receiving surface and means independent of the oil supplying means for adjusting the said throttling device toward and from the fluid receiving surface to control and vary the flow of air between the said surfaces.

6. In a carburetor, the combination of a casing having a reduced end portion, an

inverted hollow member projecting into said reduced end portion and adjustably connected therewith to form a combustible fluid chamber, a shoulder extending around the saidhollow member in opposition ton shoulde'r on the reduced end portion, thesaid opposing shoulders forming a channelto receive the fluid from said chamber, the said fluid escaping from said channel and "forming a film upon the surrounding portion of thesaid casing, means foradjusting the said hollow member to vary and COIHZIQI the flow of fluid from said chamber, and means for directing a thin film of air over and in contact with the portion of the casing surrounding the said channel to absorb the film of 'combustible fluid therefrom. 7. In' a carburetor, the combination of a casing, means for supplying a film of inflammable substance to a relatively large area of the interior surface of said casing, a

stationary hollow member supported w thin said casing having an open end projectingtoward the interior portion of the surface of said casing which is coated with said substance, a 'member adjustably secured to said hollow member and having a surface located in proximity to said coated surface, means for supplying air to said stationary member, and means for adjusting said adjustable member to vary the thickness-of the film of air which escapes between said coated surface and the adjacent surface of the said adjustable member.

8. In a carbureter, the combination of a casing, aninverted stationary hollow member supported from one end of said casing, a gasolene or' other inflammable fluid receivin chamber-having a closed top which exten s into the said hollow member, means for supplying said fiuidin a film to the surface of said casing surrounding said chamber, an adjustable annular member secured to said inverted stationary member and surrounding the'lower part of the top of said chamber, the lower end of said adjustable member being in proximity to' the fluid coated portion of the surface of said casing, a second annular member having adjustable connection with the inner lower edge of the first adjustable member, means for supplying air to the said stationary hollow member, and means for adjusting the said adjustable members together or separately to vary and control the flow of air through the said carbureter.

In testimony that I claim the foregoing as my invention I have hereunto signed my name this 5th day of February, A. D. 1912.

BRUCE DRYSDALE.

In the presence of CARRIE E. KLEINFELDER, G120. H. /VEIDNER.

Copies of this patent may be obtained ior five cents each, by addressing the Commissioner 0 Patents. Washington, I). G. 

